| Mark de Wever | f78f93b | 2022-09-23 16:33:20 | [diff] [blame^] | 1 | .. _implementation-defined-behavior: |
| 2 | |
| 3 | =============================== |
| 4 | Implementation-defined behavior |
| 5 | =============================== |
| 6 | |
| 7 | Contains the implementation details of the implementation-defined behavior in |
| 8 | libc++. Implementation-defined is mandated to be documented by the Standard. |
| 9 | |
| 10 | .. note: |
| 11 | This page is far from complete. |
| 12 | |
| 13 | |
| 14 | Implementation-defined behavior |
| 15 | =============================== |
| 16 | |
| 17 | Updating the Time Zone Database |
| 18 | ------------------------------- |
| 19 | |
| 20 | The Standard allows implementations to automatically update the |
| 21 | *remote time zone database*. Libc++ opts not to do that. Instead calling |
| 22 | |
| 23 | - ``std::chrono::remote_version()`` will update the version information of the |
| 24 | *remote time zone database*, |
| 25 | - ``std::chrono::reload_tzdb()``, if needed, will update the entire |
| 26 | *remote time zone database*. |
| 27 | |
| 28 | This offers a way for users to update the *remote time zone database* and |
| 29 | give them full control over the process. |
| 30 | |
| 31 | Listed in the index of implementation-defined behavior |
| 32 | ====================================================== |
| 33 | |
| 34 | The order of the entries matches the entries in the |
| 35 | `draft of the Standard <http://eel.is/c++draft/impldefindex>`_. |
